@article{3163,
author = {Almeida, P.},
title = {A direct approach to one variable noncommutative calculus},
journal = {Portugaliae mathematica},
volume = {46},
year = {1989},
pages = {97-114},
zbl = {0677.22006},
mrnumber = {0996405},
language = {en},
url = {http://dml.mathdoc.fr/item/3163}
}
Almeida, P. A direct approach to one variable noncommutative calculus. Portugaliae mathematica, Tome 46 (1989) pp. 97-114. http://gdmltest.u-ga.fr/item/3163/